Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kc5 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Rf6 win in 3 half-moves
5 Rf8 win in 3 half-moves
6 Kb4 draw
7 Kb6 draw
8 Kb7 draw
9 Kb8 draw
10 Kc6 draw
11 Kc8 draw
12 Kd4 draw
13 Kd6 draw
14 Kd7 draw
15 Kd8 draw
16 Rf5 draw
17 Rf7 draw
18 Rg4 draw
19 Rh4 draw
20 Kb3 loss in 2 half-moves
21 Kc3 loss in 2 half-moves
22 Kd3 loss in 2 half-moves
23 Rd4 loss in 2 half-moves
24 Re4 loss in 2 half-moves
25 Rf1 loss in 2 half-moves
26 Rf2 loss in 2 half-moves
27 Rf3 loss in 2 half-moves